This photo provided by the Cook County Sheriff's Office shows Steven L. Robbins, a convicted murderer police in Indiana and Illinois are searching for after he was mistakenly released from custody in Chicago. Authorities in Cook County said Thursday, Jan. 31, 2013 that they're investigating how and why Robbins was released. The 44-year-old was serving a 60-year sentence for murder and weapons charges in Indiana when he was sent to Chicago on Tuesday to face a drug charge. (AP Photo/Cook County Sheriff's Office)